Question

Which of the following vitamins is considered to be a hormone?
(a)C
(b)B
(c)A
(d)D

Answer 1

Hint: This vitamin is a group of fat-soluble secosteroids at risk for expanding intestinal ingestion of phosphate, calcium, and magnesium and loads of other natural impacts. The major natural source of the vitamin is the synthesis of this vitamin in the lower layers of the skin epidermis through a chemical reaction that is dependent on sun exposure (specifically UVB radiation).

Complete answer:
Vitamin D isn’t like most other vitamins. Your body can make its own vitamin D once you expose your skin to sunlight. But your body can’t make other vitamins. You need to urge other vitamins from the foods you eat. For example, you would like to urge vitamin C from fruits and vegetables. Additionally what makes vitamin D interesting contrasted with different vitamins, is that when our body gets its vitamin D, it transforms vitamin D into a hormone. This hormone is usually called “activated vitamin D” or “calcitriol.”

Additional Information: Vitamin D from the eating routine, or from skin blend, is organically inactive. It is activated by two protein enzyme hydroxylation steps, the primary within the liver and therefore the second within the kidneys. As vitamin D is often synthesized in adequate amounts by most mammals if exposed to sufficient sunlight, it's not essential, so technically not a vitamin. Instead, it is often considered a hormone, with activation of the vitamin D prohormone leading to the active form, calcitriol, which then produces effects via a nuclear receptor in multiple locations.
These two vitamin D metabolites (called 25-hydroxyvitamin D or 25(OH)D) are measured in serum to work out an individual's vitamin D status. Calcifediol is further hydroxylated by the kidneys to make calcitriol (also referred to as 1,25-dihydroxycholecalciferol), the biologically active sort of vitamin D.
So the correct answer is ‘Vitamin D’.

Note: Vitamin D has a significant role in calcium homeostasis and metabolism. Its disclosure was because of a push to locate the dietary substance ailing in kids with rickets (the youth type of osteomalacia). The evidence for other health effects of vitamin D supplementation within the general population is inconsistent.